ETHYLENE POLYMERISATION IN HIGH PRESSURE REACTOR WITH IMPROVED SUPPLY OF INITIATOR Russian patent published in 2014 - IPC B01J19/24 

FIELD: chemistry.

SUBSTANCE: claimed is method of obtaining ethylene copolymers in high pressure reactor with, at least, two spatially separated points of initiator introduction by ethylene polymerisation and, possibly, additional monomers in presence of, at least, two different mixtures of free-radical polymerisation initiators at temperature from 100°C to 350°C and pressure in the range from 160 MPa to 350 MPa, in which method contains the following stages: a) at least, two different initiators are supplied in form of solution in acceptable solvent or in liquid state, b) initiators and, possibly, additional solvents are mixed in at least two stationary mixers and c) each of mixtures is supplied to different points of initiator introduction of high pressure reactor, and installation for supply of initiator mixtures into high pressure reactor with at least two spatially separated points of initiator introduction.

EFFECT: invention makes it possible to find reliable and flexible method of dosed supply of various initiator mixtures into high pressure polymerisation reactor.

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